"深入探讨自顶向下方法的计算机网络与因特网．"

Chapter 1 of the book "Computer Networking: A Top-Down Approach" introduces the basics of computer networks and the Internet. The presentation slides for this chapter provide an overview of key concepts such as network protocols, the OSI model, and the history of the Internet. The chapter begins by defining what a computer network is, which is a collection of interconnected devices that can communicate with each other. It then delves into the different types of networks, such as local area networks (LANs) and wide area networks (WANs), and the various network topologies that can be used. Next, the chapter discusses the importance of network protocols, which are sets of rules that govern how data is transmitted and received over a network. These protocols ensure that devices can effectively communicate with each other and that data is transmitted accurately and securely. The presentation slides also cover the OSI model, which is a conceptual framework that describes how different networking functions are organized and executed. The OSI model is divided into seven layers, each of which performs specific tasks related to data transmission. The history of the Internet is another key topic covered in this chapter. The presentation slides detail the development of the Internet from its origins in the 1960s to the global network it is today. Topics such as ARPANET, TCP/IP, and the World Wide Web are explored in depth. Overall, Chapter 1 of "Computer Networking: A Top-Down Approach" provides a thorough introduction to the fundamentals of computer networks and the Internet. By understanding these key concepts, readers can build a solid foundation for further study in the field of network technology.